How much negative energy does a wormhole need?

被引：42
|
作者：
Ida, D [1 ]
Hayward, SA
机构：
[1] Kyoto Univ, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan
[2] Kyoto Univ, Yukawa Inst Theoret Phys, Sakyo Ku, Kyoto 6068502, Japan
来源：
PHYSICS LETTERS A | 1999年 / 260卷 / 3-4期
关键词：
traversible wormhole; energy condition;
D O I：
10.1016/S0375-9601(99)00518-6
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
It is known that traversible wormholes require negative energy density. We here argue how much negative energy is needed for wormholes, using a local analysis which does not assume any symmetry, and in particular allows dynamic (non-stationary) but non-degenerate wormholes. We find that wormholes require two constraints on the energy density, given by two independent components of the Einstein equation. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码：175 / 181
页数：7
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